BlockBefore

Eldora, Colorado

29 topographic sheets cover this place, the earliest surveyed in 1905 and the latest in 1983. It stands in the Bald Mountain census division. It lies in ZIP code area 80466. It lies near Spencer Mountain. The Survey maps it on the Nederland quadrangle. 140 people lived here at the 2020 count. It stands 8,642 feet above sea level.

Eldora within Boulder County

On record in Eldora

Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.

On the National Register 5 records

Population over time

2 figures

Eldora fell from 142 to 140 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.

YearPeople Change
2010142
2020140-2 (-1%)

Topographic sheets covering this place

11 surveys from 29 printed sheets

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

Fires near this place

177 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 177 fires within 5 miles of Eldora between 1992 and 2020, burning about 1,164 acres in total. 8 started naturally. 5 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause Fires
Missing data/not specified/undetermined112
Recreation and ceremony39
Natural8
Debris and open burning5
Equipment and vehicle use5
Arson/incendiarism5
Railroad operations and maintenance1
Power generation/transmission/distribution1
Smoking1

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

DateCause SizeReported by Name on the report
9 September 2018Missing data/not specified/undeterminedunder an acreNederland Fire Protection DistrictUNKNOWN
8 September 2017Recreation and ceremonyunder an acreArapaho and Roosevelt National Forests and Pawnee National GrasslandSITE 11 FIRE
8 September 2017Equipment and vehicle useunder an acreNederland Fire Protection DistrictUNKNOWN
8 September 2017Missing data/not specified/undeterminedunder an acreNederland Fire Protection DistrictUNKNOWN
8 September 2016Missing data/not specified/undeterminedunder an acreNederland Fire Protection DistrictUNKNOWN
8 September 2015Recreation and ceremonyunder an acreArapaho and Roosevelt National Forests and Pawnee National GrasslandEAST PORTAL
8 September 2010Missing data/not specified/undeterminedunder an acreColorado State Forest Service-State Headquartersnot named
7 September 2015Recreation and ceremonyunder an acreArapaho and Roosevelt National Forests and Pawnee National Grassland925A

Settlements close enough to share some of these fires:

Every fire recorded in Boulder County

Mines and quarries near this place

10 of 284 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 284 workings within 5 miles of Eldora: 163 past producers, 88 occurrences, 28 producers, 3 unknowns. 29 still produce. What was taken out: Tungsten, Gold, Silver, Gold, Silver. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
AnchorGold, Copper, Lead, SilverPast Producer
BelcherSilver, Gold, Lead, CopperPast ProducerGalena, Sphalerite, Chalcopyrite, Pyrite
Big MoonGold, Silver, LeadPast Producer
Blue Bird MineCopper, Gold, Zinc, Lead, SilverPast ProducerUnderground
Boulder Co. MineSilver, Gold, Tungsten, LeadOccurrenceVein
Boulder County TunnelCopper, Gold, Lead, ZincOccurrence1870
Caribou Hill iron depositIron, Titanium, VanadiumOccurrenceIlmenite, Magnetite, Titaniferous Magnetitite
Caribou MineGold, Lead, Silver, Uranium, Copper, Zinc, VanadiumPast Producer1869
Caribou Mine (based on DMEA uranium report)Zinc, Gold, Lead, Silver, UraniumPast Producer1869
Clark TunnelTungsten, Silver, GoldUnknown

Every working recorded in Boulder County

Nearest settlements

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

Map PlaceDistance Sheets
Cardinal (historical)1.7 miles29
Hessie (historical)2.0 miles29
Caribou (historical)2.4 miles29
Grand Island (historical)2.6 miles29
Nederland2.9 miles29
Caribou City3.9 miles29
Whispering Pine4.4 miles25
Bonanza Mountain Estates4.8 miles25

Elsewhere

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

Wikipedia article on EldoraAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q1325670The structured record the population and elevation above come from. Public domain (CC0).

Provenance

This settlement is recorded in the Geographic Names Information System as feature 181070. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.

Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.